10257820 has 12 divisors (see below), whose sum is σ = 21541464. Its totient is φ = 4103120.

The previous prime is 10257809. The next prime is 10257823. The reversal of 10257820 is 2875201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10257823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256426 + ... + 256465.

It is an arithmetic number, because the mean of its divisors is an integer number (1795122).

Almost surely, 2^10257820 is an apocalyptic number.

10257820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10257820 is an abundant number, since it is smaller than the sum of its proper divisors (11283644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10257820 is a wasteful number, since it uses less digits than its factorization.

10257820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512900 (or 512898 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 10257820 is about 3202.7831646866. The cubic root of 10257820 is about 217.2793022706.

The spelling of 10257820 in words is "ten million, two hundred fifty-seven thousand, eight hundred twenty".